external/webkit r30707

1 files changed, 261 insertions, 0 deletions

diff --git a/WebCore/dom/CharacterData.cpp b/WebCore/dom/CharacterData.cpp
new file mode 100644
index 0000000..1228c98
--- /dev/null
+++ b/WebCore/dom/CharacterData.cpp
@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+#include "CharacterData.h"
+
+#include "CString.h"
+#include "Document.h"
+#include "EventNames.h"
+#include "ExceptionCode.h"
+#include "MutationEvent.h"
+#include "RenderText.h"
+
+namespace WebCore {
+
+using namespace EventNames;
+
+CharacterData::CharacterData(Document *doc)
+    : EventTargetNode(doc)
+{
+}
+
+CharacterData::CharacterData(Document *doc, const String &_text)
+    : EventTargetNode(doc)
+{
+    m_data = _text.impl() ? _text.impl() : StringImpl::empty();
+}
+
+CharacterData::~CharacterData()
+{
+}
+
+void CharacterData::setData(const String& data, ExceptionCode& ec)
+{
+    // NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly
+    if (isReadOnlyNode()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+
+    if (equal(m_data.get(), data.impl()))
+        return;
+
+    RefPtr<StringImpl> oldStr = m_data;
+    m_data = data.impl();
+    
+    if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
+        detach();
+        attach();
+    } else if (renderer())
+        static_cast<RenderText*>(renderer())->setText(m_data);
+    
+    dispatchModifiedEvent(oldStr.get());
+    
+    document()->removeMarkers(this);
+}
+
+String CharacterData::substringData( const unsigned offset, const unsigned count, ExceptionCode& ec)
+{
+    ec = 0;
+    checkCharDataOperation(offset, ec);
+    if (ec)
+        return String();
+
+    return m_data->substring(offset, count);
+}
+
+void CharacterData::appendData( const String &arg, ExceptionCode& ec)
+{
+    ec = 0;
+
+    // NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly
+    if (isReadOnlyNode()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+
+    String newStr = m_data;
+    newStr.append(arg);
+
+    RefPtr<StringImpl> oldStr = m_data;
+    m_data = newStr.impl();
+
+    if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
+        detach();
+        attach();
+    } else if (renderer())
+        static_cast<RenderText*>(renderer())->setTextWithOffset(m_data, oldStr->length(), 0);
+    
+    dispatchModifiedEvent(oldStr.get());
+}
+
+void CharacterData::insertData( const unsigned offset, const String &arg, ExceptionCode& ec)
+{
+    ec = 0;
+    checkCharDataOperation(offset, ec);
+    if (ec)
+        return;
+
+    String newStr = m_data;
+    newStr.insert(arg, offset);
+
+    RefPtr<StringImpl> oldStr = m_data;
+    m_data = newStr.impl();
+
+    if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
+        detach();
+        attach();
+    } else if (renderer())
+        static_cast<RenderText*>(renderer())->setTextWithOffset(m_data, offset, 0);
+    
+    dispatchModifiedEvent(oldStr.get());
+    
+    // update the markers for spell checking and grammar checking
+    unsigned length = arg.length();
+    document()->shiftMarkers(this, offset, length);
+}
+
+void CharacterData::deleteData( const unsigned offset, const unsigned count, ExceptionCode& ec)
+{
+    ec = 0;
+    checkCharDataOperation(offset, ec);
+    if (ec)
+        return;
+
+    String newStr = m_data;
+    newStr.remove(offset, count);
+
+    RefPtr<StringImpl> oldStr = m_data;
+    m_data = newStr.impl();
+    
+    if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
+        detach();
+        attach();
+    } else if (renderer())
+        static_cast<RenderText*>(renderer())->setTextWithOffset(m_data, offset, count);
+
+    dispatchModifiedEvent(oldStr.get());
+
+    // update the markers for spell checking and grammar checking
+    document()->removeMarkers(this, offset, count);
+    document()->shiftMarkers(this, offset + count, -static_cast<int>(count));
+}
+
+void CharacterData::replaceData( const unsigned offset, const unsigned count, const String &arg, ExceptionCode& ec)
+{
+    ec = 0;
+    checkCharDataOperation(offset, ec);
+    if (ec)
+        return;
+
+    unsigned realCount;
+    if (offset + count > m_data->length())
+        realCount = m_data->length()-offset;
+    else
+        realCount = count;
+
+    String newStr = m_data;
+    newStr.remove(offset, realCount);
+    newStr.insert(arg, offset);
+
+    RefPtr<StringImpl> oldStr = m_data;
+    m_data = newStr.impl();
+
+    if ((!renderer() || !rendererIsNeeded(renderer()->style())) && attached()) {
+        detach();
+        attach();
+    } else if (renderer())
+        static_cast<RenderText*>(renderer())->setTextWithOffset(m_data, offset, count);
+    
+    dispatchModifiedEvent(oldStr.get());
+    
+    // update the markers for spell checking and grammar checking
+    int diff = arg.length() - count;
+    document()->removeMarkers(this, offset, count);
+    document()->shiftMarkers(this, offset + count, diff);
+}
+
+String CharacterData::nodeValue() const
+{
+    return m_data;
+}
+
+bool CharacterData::containsOnlyWhitespace() const
+{
+    if (m_data)
+        return m_data->containsOnlyWhitespace();
+    return true;
+}
+
+void CharacterData::setNodeValue( const String &_nodeValue, ExceptionCode& ec)
+{
+    // NO_MODIFICATION_ALLOWED_ERR: taken care of by setData()
+    setData(_nodeValue, ec);
+}
+
+void CharacterData::dispatchModifiedEvent(StringImpl *prevValue)
+{
+    if (parentNode())
+        parentNode()->childrenChanged();
+    if (document()->hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER)) {
+        ExceptionCode ec;
+        dispatchEvent(new MutationEvent(DOMCharacterDataModifiedEvent, true, false, 0, prevValue, m_data, String(), 0), ec);
+    }
+    dispatchSubtreeModifiedEvent();
+}
+
+void CharacterData::checkCharDataOperation( const unsigned offset, ExceptionCode& ec)
+{
+    ec = 0;
+
+    // INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit
+    // units in data.
+    if (offset > m_data->length()) {
+        ec = INDEX_SIZE_ERR;
+        return;
+    }
+
+    // NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly
+    if (isReadOnlyNode()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+}
+
+int CharacterData::maxCharacterOffset() const 
+{
+    return (int)length();
+}
+
+bool CharacterData::rendererIsNeeded(RenderStyle *style)
+{
+    if (!m_data || m_data->length() == 0)
+        return false;
+    return EventTargetNode::rendererIsNeeded(style);
+}
+
+bool CharacterData::offsetInCharacters() const
+{
+    return true;
+}
+
+} // namespace WebCore